This package was designed to work with Umbraco v4 to v6 only.
Due to other package commitments, I am no longer maintaining this package.
The jQuery Knob DataType for Umbraco is a nice, downward compatible, touchable, jQuery dial for enabling numeric input on an Umbraco document.
For more information about the jQuery Knob component, please see: https://github.com/aterrien/jQuery-Knob